Convert //chrome/browser/extensions from scoped_ptr to std::unique_ptr

chrome/browser/extensions/api/debugger/debugger_apitest.cc

Index: chrome/browser/extensions/api/debugger/debugger_apitest.cc
diff --git a/chrome/browser/extensions/api/debugger/debugger_apitest.cc b/chrome/browser/extensions/api/debugger/debugger_apitest.cc
index 91885ec717dfbcf4c3ebf02780685df87ff84cca..acf5b620351cd95208f97bacdb2ad3d30c03ed99 100644
--- a/chrome/browser/extensions/api/debugger/debugger_apitest.cc
+++ b/chrome/browser/extensions/api/debugger/debugger_apitest.cc
@@ -96,7 +96,7 @@ testing::AssertionResult DebuggerApiTest::RunAttachFunction(
   // Attach by targetId.
   scoped_refptr<DebuggerGetTargetsFunction> get_targets_function =
       new DebuggerGetTargetsFunction();
-  scoped_ptr<base::Value> value(
+  std::unique_ptr<base::Value> value(
       extension_function_test_utils::RunFunctionAndReturnSingleResult(
           get_targets_function.get(), "[]", browser()));
   base::ListValue* targets = nullptr;